Remove linux x86 from HW video decode black list

content/content_common.gypi

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'dependencies': [
     '../base/base.gyp:base',
     '../components/tracing.gyp:tracing',
     '../gpu/command_buffer/command_buffer.gyp:gles2_utils',
     '../net/net.gyp:net',
@@ skipping 612 matching lines @@
       'include_dirs': [
         '<(DEPTH)/third_party/khronos',
       ],
       'link_settings': {
         'libraries': [
           '-lEGL',
           '-lGLESv2',
         ],
       },
     }],
-    ['target_arch != "arm" and chromeos == 1 and use_x11 == 1', {
+    ['target_arch != "arm" and use_x11 == 1', {
       'sources': [
         'common/gpu/media/h264_dpb.cc',
         'common/gpu/media/h264_dpb.h',
         'common/gpu/media/va_surface.h',
         'common/gpu/media/vaapi_h264_decoder.cc',
         'common/gpu/media/vaapi_h264_decoder.h',
         'common/gpu/media/vaapi_video_decode_accelerator.cc',
         'common/gpu/media/vaapi_video_decode_accelerator.h',
         'common/gpu/media/vaapi_wrapper.cc',
         'common/gpu/media/vaapi_wrapper.h',
@@ skipping 109 matching lines @@
         'common/sandbox_linux/bpf_renderer_policy_linux.cc',
         'common/sandbox_linux/bpf_renderer_policy_linux.h',
         'common/sandbox_linux/sandbox_bpf_base_policy_linux.cc',
         'common/sandbox_linux/sandbox_bpf_base_policy_linux.h',
       ],
     }, {
       'defines': ['USE_SECCOMP_BPF'],
     }],
   ],
 }